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公开(公告)号：US20190085812A1
公开(公告)日：2019-03-21
申请号：US16132442
申请日：2018-09-16
摘要： A handheld work apparatus has a combustion engine and an ignition device for controlling a spark plug. The ignition device includes an electronic control device having a short circuit button for switching off the combustion engine. A temperature sensor is for capturing an operating temperature. The short circuit button and the temperature sensor are connected to a common signal input of the control device via a common signal line. The temperature sensor is an ohmic resistance variable on the basis of the temperature. A measurement voltage dropped across the resistance of the temperature sensor is supplied, as an analog temperature signal, to a common analog signal input of the control device. The measurement voltage at the temperature sensor collapses in the button position of the short circuit button, as a result of which the analog temperature signal applied to the analog signal input of the control device is extinguished.
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2.发明申请公开(公告)号：US20150198129A1
公开(公告)日：2015-07-16
申请号：US14597891
申请日：2015-01-15
发明人： Manuel Dangelmaier , Tim Gegg , Clemens Klatt
IPC分类号： F02N11/08
CPC分类号： F02D41/062 , F02B63/02 , F02D41/064 , F02D41/065 , F02D2041/2065 , F02D2200/022 , F02D2200/0416 , F02D2400/06
摘要： A work apparatus has an internal combustion engine and a starter device for starting the engine. Within a housing of the work apparatus, a first electrical component is arranged at a first location and a second electrical component is arranged at a second location. A control unit is provided which is connected to the first electrical component and to the second electrical component. The control unit detects a first temperature-dependent value of the first electrical component at the first location, and a second temperature-dependent value of the second electrical component at the second location, and identifies the starting conditions as a function of these values. The first electrical component is a first actuator and the second electrical component is a second actuator or a sensor.
摘要翻译： 工作装置具有用于起动发动机的内燃机和起动装置。 在工作装置的壳体内，第一电气部件布置在第一位置处，并且第二电气部件布置在第二位置。 提供了连接到第一电气部件和第二电气部件的控制单元。 控制单元检测第一位置处的第一电气部件的第一温度相关值，以及第二位置处的第二电气部件的第二温度相关值，并且识别起始条件作为这些值的函数。 第一电气部件是第一致动器，第二电气部件是第二致动器或传感器。
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公开(公告)号：US10774804B2
公开(公告)日：2020-09-15
申请号：US16532034
申请日：2019-08-05
摘要： A method is for the safe starting of a combustion engine in a handheld, portable work apparatus. When starting, start rpm limiting is activated when the rotational speed of the combustion engine exceeds an activation rotational speed that lies above the coupling rotational speed of a centrifugal coupling. After activating the start rpm limiting for at least one working cycle, an intervention in the ignition is carried out such that the rotational speed of the combustion engine decreases. After the rotational speed has decreased below a lower engagement rotational speed, an intervention in the ignition is carried out such that the rotational speed increases. If the rotational speed exceeds an upper engagement rotational speed, an intervention in the ignition is again carried out such that the rotational speed decreases. The upper engagement rotational speed and/or the lower engagement rotational speed is/are changed with an increasing number of consecutive working cycles.
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公开(公告)号：US09534528B2
公开(公告)日：2017-01-03
申请号：US13707832
申请日：2012-12-07
CPC分类号： F02B15/00 , F02M1/16 , F02M37/0023 , F02M37/0029 , F02M37/007 , F02M37/16 , F02M37/18 , F02M37/20 , F02M69/10
摘要： An internal combustion engine has a fuel system that has a fuel valve with a housing, wherein in the housing a fuel chamber is formed. A fuel pump pumps fuel from a fuel tank into the fuel chamber. A conveying pump provides forced conveyance of fuel into the fuel system. A feed line is connected to the fuel chamber of the fuel valve. The conveying pump is arranged in the feed line and supplies fuel to the fuel chamber. A relief line is connected to the fuel chamber of the fuel valve and a first valve is arranged in the relief line.
摘要翻译： 内燃机具有燃料系统，该燃料系统具有带有壳体的燃料阀，其中在壳体中形成燃料室。 燃料泵将燃料从燃料箱泵入燃料室。 输送泵提供强制的燃料输送到燃料系统中。 进料管线连接到燃料阀的燃料室。 输送泵布置在进料管线中并将燃料供应到燃料室。 救生线连接到燃料阀的燃料室，第一阀布置在救生线中。
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公开(公告)号：US10570842B2
公开(公告)日：2020-02-25
申请号：US16129637
申请日：2018-09-12
发明人： Clemens Klatt
摘要： A handheld work apparatus has a combustion engine, a pull-rope starter, and a stop button for switching off the combustion engine. A throttle element is arranged in an intake channel of the combustion engine. The work apparatus has a control device for activating a spark plug and a fuel valve. The control device has a starting mode wherein the combustion engine can be started via the pull-rope starter, and an operating mode wherein the operator can adjust the throttle to vary the rotational speed (n) of the combustion engine. The operating and starting mode differ in terms of the control of ignition time and fuel quantity to be supplied. When the combustion engine is started from the switched-off state, the control device is automatically in starting mode, such that after the combustion engine is switched off, the work apparatus is immediately ready for restarting via the pull-rope starter.
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公开(公告)号：US09644558B2
公开(公告)日：2017-05-09
申请号：US14597891
申请日：2015-01-15
发明人： Manuel Dangelmaier , Tim Gegg , Clemens Klatt
CPC分类号： F02D41/062 , F02B63/02 , F02D41/064 , F02D41/065 , F02D2041/2065 , F02D2200/022 , F02D2200/0416 , F02D2400/06
摘要： A work apparatus has an internal combustion engine and a starter device for starting the engine. Within a housing of the work apparatus, a first electrical component is arranged at a first location and a second electrical component is arranged at a second location. A control unit is provided which is connected to the first electrical component and to the second electrical component. The control unit detects a first temperature-dependent value of the first electrical component at the first location, and a second temperature-dependent value of the second electrical component at the second location, and identifies the starting conditions as a function of these values. The first electrical component is a first actuator and the second electrical component is a second actuator or a sensor.
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公开(公告)号：US20200040863A1
公开(公告)日：2020-02-06
申请号：US16532034
申请日：2019-08-05
摘要： A method is for the safe starting of a combustion engine in a handheld, portable work apparatus. When starting, start rpm limiting is activated when the rotational speed of the combustion engine exceeds an activation rotational speed that lies above the coupling rotational speed of a centrifugal coupling. After activating the start rpm limiting for at least one working cycle, an intervention in the ignition is carried out such that the rotational speed of the combustion engine decreases. After the rotational speed has decreased below a lower engagement rotational speed, an intervention in the ignition is carried out such that the rotational speed increases. If the rotational speed exceeds an upper engagement rotational speed, an intervention in the ignition is again carried out such that the rotational speed decreases. The upper engagement rotational speed and/or the lower engagement rotational speed is/are changed with an increasing number of consecutive working cycles.
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公开(公告)号：US20190085779A1
公开(公告)日：2019-03-21
申请号：US16129637
申请日：2018-09-12
发明人： Clemens Klatt
CPC分类号： F02D41/067 , F02B63/02 , F02D41/20 , F02D2200/101 , F02D2400/04 , F02D2400/06 , F02N3/02 , F02P5/045 , F02P5/1506 , F02P11/025
摘要： A handheld work apparatus has a combustion engine, a pull-rope starter, and a stop button for switching off the combustion engine. A throttle element is arranged in an intake channel of the combustion engine. The work apparatus has a control device for activating a spark plug and a fuel valve. The control device has a starting mode wherein the combustion engine can be started via the pull-rope starter, and an operating mode wherein the operator can adjust the throttle to vary the rotational speed (n) of the combustion engine. The operating and starting mode differ in terms of the control of ignition time and fuel quantity to be supplied. When the combustion engine is started from the switched-off state, the control device is automatically in starting mode, such that after the combustion engine is switched off, the work apparatus is immediately ready for restarting via the pull-rope starter.
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公开(公告)号：US20140299098A1
公开(公告)日：2014-10-09
申请号：US14245649
申请日：2014-04-04
发明人： Michael Raffenberg , Clemens Klatt
IPC分类号： F02P5/145
摘要： An internal combustion engine includes a cylinder and a piston journalled to reciprocate therein. The cylinder and piston conjointly delimit a combustion chamber into which a spark plug projects. Ignition of the spark plug occurs at an ignition time point controlled by a control unit. The ignition time point is controlled in an idle speed range according to an idle control having a most advanced ignition time point. The engine has a decompression valve which, when open, connects the combustion chamber to a pressure relief space. The valve is open during engine start and closes when pressure in the combustion chamber exceeds a closing pressure. To close the valve, the ignition occurs in the idle speed range for an engine cycle departing from the idle control at a closing ignition time point lying approximately 5° crankshaft angle ahead of the most advanced ignition time point.
摘要翻译： 内燃机包括一个汽缸和一个活塞，其活塞在其中往复运动。 气缸和活塞联合地界定火花塞突出的燃烧室。 在由控制单元控制的点火时间点发生点火火花塞。 点火时间点根据具有最高点火时间点的怠速控制在怠速范围内被控制。 发动机具有减压阀，当减压阀打开时，将燃烧室连接到减压空间。 在发动机启动期间阀门打开，当燃烧室内的压力超过关闭压力时关闭阀门。 为了关闭阀门，在怠速转速范围内发生点火，发动机循环从处于最高点火时间点之前大约5°曲轴角度的关闭点火时间点处于怠速控制状态。
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公开(公告)号：US20130340722A1
公开(公告)日：2013-12-26
申请号：US13707832
申请日：2012-12-07
IPC分类号： F02B15/00
CPC分类号： F02B15/00 , F02M1/16 , F02M37/0023 , F02M37/0029 , F02M37/007 , F02M37/16 , F02M37/18 , F02M37/20 , F02M69/10
摘要： An internal combustion engine has a fuel system that has a fuel valve with a housing, wherein in the housing a fuel chamber is formed. A fuel pump pumps fuel from a fuel tank into the fuel chamber. A conveying pump provides forced conveyance of fuel into the fuel system. A feed line is connected to the fuel chamber of the fuel valve. The conveying pump is arranged in the feed line and supplies fuel to the fuel chamber. A relief line is connected to the fuel chamber of the fuel valve and a first valve is arranged in the relief line.
摘要翻译： 内燃机具有燃料系统，该燃料系统具有带有壳体的燃料阀，其中在壳体中形成燃料室。 燃料泵将燃料从燃料箱泵入燃料室。 输送泵提供强制的燃料输送到燃料系统中。 进料管线连接到燃料阀的燃料室。 输送泵布置在进料管线中并将燃料供应到燃料室。 救生线连接到燃料阀的燃料室，第一阀布置在救生线中。
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